Set the alarm clock for 5:37 am

Leave this tab open — the alarm only rings while the tab stays open.

The alarm goes off in: ::

You can also try the other alarm clocks

Alarm clock for 5:35 am Alarm clock for 5:36 am Alarm clock for 5:38 am Alarm clock for 5:39 am

Going to bed for a 5:37 am alarm

Asleep by 8:22 pm — 6 full sleep cycles, about 9 hours
Asleep by 9:52 pm — 5 full sleep cycles, about 7 hours
Asleep by 11:22 pm — 4 full sleep cycles, about 6 hours

A sleep cycle runs about 90 minutes, and most people take around 15 minutes to drop off. Waking at the end of a cycle feels easier than waking in the middle of one.

5:37 am across the country

London	5:37 am
Birmingham	5:37 am
Manchester	5:37 am
Glasgow	5:37 am
Belfast	5:37 am

Times are worked out live in your browser, so daylight saving is already accounted for.

How to use the online alarm clock

As you hand the strawberry picking over to the next person, set the alarm for 5:37 am so the changeover happens without losing track of the morning’s work. That leaves a clear marker before 6:00 am, when the picked fruit may need to be gathered, checked and moved towards the farm stall ahead of opening.

For this handover, keep the alarm page visible and the sound turned up, then check that 5:37 am is shown correctly. A brief test can confirm that the volume will be noticeable outdoors or inside a packing shed. Closing the page or allowing the computer to sleep before the alarm sounds could leave the strawberry picking without its planned relief, so use a separate alarm clock or phone alarm if nobody will remain near the active browser.

Whoever is taking over should allow for the journey to the field rather than treating 5:37 am as the time to leave home. Rural lanes can be quiet this early, but farm vehicles, delivery vans and temporary roadworks can still add minutes. Work backwards from the expected arrival, include time to park and walk to the picking area, and keep the route ready in case a usual gate or lane is closed.

Common questions

Will it still be right when the clocks change?

Yes. It reads your device's local clock, so the move between GMT and BST at the end of March and October is picked up automatically, as long as the computer's date, time and time zone are set correctly.

Can I use this on a phone?

It works in a mobile browser, but phones lock the screen and suspend background tabs far more readily than a laptop does, which can stop the alarm sounding. For anything important, a desktop or a plugged-in laptop is the steadier option.

Does the alarm still work if I close the tab?

No. Everything runs inside this page, so closing the tab — or quitting the browser altogether — ends the countdown there and then. Leaving it open in the background is all it asks, and switching to another tab makes no difference.

What happens if my laptop goes to sleep before 5:37 am?

The tab sleeps along with it and the alarm will not sound on time, if at all. If you are relying on it, change the power settings so the machine stays awake, or keep a phone alarm running as well.